Specifications:
The document outlines specifications for two models of high-power thermal sensors: L250W and L300W-LP. Both models are designed for general purposes and high power densities with long pulses. They feature a broadband absorber type and have a spectral range of 0.9 - 20 µm for L250W and 0.4 - 1.5, 10.6 µm for L300W-LP. Both models have a 50mm aperture.

Power Mode:
The power range for L250W is 4W - 250W, while for L300W-LP it is 4W - 300W. Both models have power scales of 250W/30W and 300W/30W respectively, with a power noise level of 200mW. The maximum average power density is specified as 10 KW/cm² at 250W for L250W and 14 KW/cm² at 300W for L300W-LP. The response time with a meter is typically 2.5 seconds, and power accuracy is +/- 3% for both models.

Energy Mode:
The energy range for L250W is 200mJ - 200J, and for L300W-LP it is 200mJ - 300J. Energy scales are 200J/30J/3J for L250W and 300J/30J/3J for L300W-LP. Minimum energy is 200mJ for both models. Maximum energy density varies with pulse duration, with specific values provided for different durations.

Cooling and Physical Characteristics:
Both models require water cooling with a minimum water flow rate at full power. The weight of each model is 0.6 Kg. The water temperature range is specified as 18-30°C, with a rate of change less than 1°C/min.

Features:
The sensors are capable of handling high powers up to 300W and are water-cooled with 50mm apertures. They are suitable for applications requiring high power densities and long pulse durations.